feat(root): add project management features and dependencies

Add Kanban board, epics, notifications, external sharing, and related API endpoints; update README and install required packages such as django‑q2, openpyxl, and others.

pyproject.toml

@@ -18,6 +18,14 @@ dependencies = [
     "django-tailwind-cli>=4.6.2",
     "django-htmx>=1.27.0",
     "gunicorn>=26.0.0",
+    "django-q2>=1.10.0",
+    "openpyxl>=3.1.5",
+    "requests>=2.34.2",
+    "django-import-export>=4.4.1",
+    "django-filter>=25.2",
+    "drf-spectacular>=0.29.0",
+    "django-browser-reload>=1.21.0",
+    "pillow>=12.2.0",
 ]
 
 [dependency-groups]
@@ -46,5 +54,9 @@ ignore = [
     "B008",  # do not perform function calls in argument defaults
 ]
 
+[tool.ruff.lint.per-file-ignores]
+"**/__init__.py" = ["F401", "F403", "F405"]
+"config/settings/*.py" = ["F401", "F403", "F405"]
+
 [tool.ruff.lint.isort]
-known-first-party = ["config"]
+known-first-party = ["config", "src"]